A new species, Deporaus (Roelofsideporaus) nanshanensis Legalov, sp. nov. from Shaanxi (China) is described and illustrated. This new species is similar to Deporaus affectatus Faust, 1887 but differs in the yellow-brown antennae, different form of the sclerites of the endophallus, narrower elytra, larger eyes, and longer antennae.